Assassin (Zero)

Japanese name:

アサシン

Nickname:

Zero

Assassin is actually composed of several entities rather than just one. They act as reconnaissance agents for Tokiomi and Kirei after Gilgamesh "kills" one of them. They can only be truly defeated if all of them are killed. The showing of an Assassin in an Arabic setting during the ED, suggest they might be the reincarnation of the Assassin Order.